The 12" extension is the same as your trainer, so you don't have to connnect/disconnect the cable from the RX all de time.
It comes with the Radio system.

You also need extensions to the servo from the Y becuase the servos leads arn't long enough to reach the center
of the wing..so you can hook it up to the Y. It's boarderline.

You can splice the servo leads and can extend it ..if not, just buy extensions.

The Sig is US made and Salley has a retirement plane, medical insurance...and lord knows she needs it, breathing
glue and saw dust all the time.

Verse Mrs. Lee in China..she's **** out of luck if she gets hurt or get sick.